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Finding the Fourth Proportional to 2,359.36, 3,539.08 and 715.90

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Solution

The fourth proportional to 2,359.36, 3,539.08 and 715.90 is: 1,073.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,359.36 : 3,539.08 = 715.90 : x
  2. Step 2: Convert to fraction form
    2,359.36/3,539.08 = 715.90/x
  3. Step 3: Cross multiply
    2,359.36x = 3,539.08 × 715.90
  4. Step 4: Simplify right side
    2,359.36x = 2,533,627.37
  5. Step 5: Solve for x
    x = 2,533,627.37/2,359.36
  6. Step 6: Final answer
    x = 1,073.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.